Company
CRiSP Screenshots
CRiSP Newsletter
Testimonials
| Dtrace weirdness (really, me weirdness) |
 |
 |
 |
|
I spent much of the week chasing an issue in why the usdt/c example wouldnt compile or build. I hadnt really changed anything in this area, yet an invalid simple.o was being created (invalid in an ELF sense). I tracked down a partial reason to be that in calling libelf.a, the enum's we pick up from the elf.h header file(s) didnt agree with what libelf.a was expecting. (Very weird - looks like the Solaris elf header and Linux header dont agree). What I dont understand is why this suddenly hit. I am thinking one of my Ubuntu updates caused a discrepancy to the header and libraries, and I have been chasing my tail. Early on in dtrace/linux evolution, I did a bunch of work to dt_link.c to all USDT probes to work, and I was happy with my changes. Just now, I reverted all of them, and my USDT problems went away. Something fishy is going on here - so I urge caution when I do the next distro. It maybe my build environment is polluted/broken and that may cause differences between what I observe and what dtrace users see on their systems. Post created by CRiSP v10.0.2a-b5887 Read more http://crtags.blogspot.com/2010/09/dtrace-weirdness-really-me-weirdness.html |